A processor, connected to a non-volatile memory storing first memory authentication information for authentication of the non-volatile memory, the processor includes an operation unit configured to perform an operation utilizing information stored in the non-volatile memory; an authentication memory formed integrally with the operation unit, and storing second memory authentication information for authentication of the non-volatile memory; an authentication information acquiring unit configured to acquire the first memory authentication information from the non-volatile memory; a memory authenticating unit configured to compare the first memory authentication information and the second memory authentication information to authenticate the non-volatile memory; and a memory access controlling unit configured to permit an access to the non-volatile memory when the memory authenticating unit succeeds in authentication.